A.用能單位總節(jié)能量; B.空調(diào)改造節(jié)能效益 C.鍋爐運行符合經(jīng)濟運行要求 D.工藝順序優(yōu)化帶來節(jié)能效益
A.10%~20% B.20%~30% C.30%~40% D.40%~50%
A.50% B.60% C.70% D.40%